Filter for an air filtration device



FIG. 1 is a top front perspective view of a filter of our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevation view thereof, the right, rear and left side elevation views being mirror images; and,

FIG. 4 is a cross sectional view of the filter taken along line 4-4 of FIG. 2.

The portion of the filter shown in phantom is not part of the design sought to be patented and is provided for environmental purposes only. 

CLAIM The ornamental design for a filter for an air filtration device, as shown and described. 